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Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh gear changesDelayed or rough shifting

A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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All severities9253 Low priority305 Check soon8256 Urgent621

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All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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Diagnostic codes

Showing 193–216 of 515

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P2099Post Catalyst Fuel Trim System Too Rich Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP2099 relates to post catalyst fuel trim system too rich bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P20A0Reductant Purge Control Valve A Circuit /OpenCheck soonEmissions System30–120 minutes for initial diagnosisP20A0 relates to reductant purge control valve a circuit /open. Check the fault conditions and vehicle-specific procedure before replacing parts.P20A1Reductant Purge Control Valve A PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP20A1 relates to reductant purge control valve a performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P20A2Reductant Purge Control Valve A Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP20A2 relates to reductant purge control valve a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P20A3Reductant Purge Control Valve A Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP20A3 relates to reductant purge control valve a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P20A4Reductant Purge Control Valve A Stuck OpenCheck soonEmissions System30–120 minutes for initial diagnosisP20A4 relates to reductant purge control valve a stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P20A5Reductant Purge Control Valve A Stuck ClosedCheck soonEmissions System30–120 minutes for initial diagnosisP20A5 relates to reductant purge control valve a stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P20E2Exhaust Gas Temperature Sensor 1/2 Correlation Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP20E2 relates to exhaust gas temperature sensor 1/2 correlation bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P20E3Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP20E3 relates to exhaust gas temperature sensor 1/3 correlation bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P20E4Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP20E4 relates to exhaust gas temperature sensor 2/3 correlation bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P20E5Exhaust Gas Temperature Sensor 1/2 Correlation Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP20E5 relates to exhaust gas temperature sensor 1/2 correlation bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P20ECSCR NOx Catalyst - Over Temperature Bank 1UrgentEmissions System30–120 minutes for initial diagnosisP20EC relates to scr nox catalyst - over temperature bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P20EDSCR NOx Pre-Catalyst - Over Temperature Bank 1UrgentEmissions System30–120 minutes for initial diagnosisP20ED relates to scr nox pre-catalyst - over temperature bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P20EESCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1Low priorityEmissions System30–120 minutes for initial diagnosisP20EE relates to scr nox catalyst efficiency below threshold bank 1 catalyst 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P20EFSCR NOx Pre- Catalyst Efficiency Below Threshold Bank 1Low priorityEmissions System30–120 minutes for initial diagnosisP20EF relates to scr nox pre- catalyst efficiency below threshold bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P20F0SCR NOx Catalyst - Over Temperature Bank 2UrgentEmissions System30–120 minutes for initial diagnosisP20F0 relates to scr nox catalyst - over temperature bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P20F1SCR NOx Pre-Catalyst - Over Temperature Bank 2UrgentEmissions System30–120 minutes for initial diagnosisP20F1 relates to scr nox pre-catalyst - over temperature bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P20F2SCR NOx Catalyst Efficiency Below Threshold Bank 2Low priorityEmissions System30–120 minutes for initial diagnosisP20F2 relates to scr nox catalyst efficiency below threshold bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P20F3SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2Low priorityEmissions System30–120 minutes for initial diagnosisP20F3 relates to scr nox pre- catalyst efficiency below threshold bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P213AEGR Throttle Control Circuit B /OpenCheck soonEmissions System30–120 minutes for initial diagnosisP213A relates to egr throttle control circuit b /open. Check the fault conditions and vehicle-specific procedure before replacing parts.P213BEGR Throttle Control Circuit B Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP213B relates to egr throttle control circuit b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P213CEGR Throttle Control Circuit B LowCheck soonEmissions System30–120 minutes for initial diagnosisP213C relates to egr throttle control circuit b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P213DEGR Throttle Control Circuit B HighCheck soonEmissions System30–120 minutes for initial diagnosisP213D relates to egr throttle control circuit b high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2141EGR Throttle Control Circuit A LowCheck soonEmissions System30–120 minutes for initial diagnosisP2141 relates to egr throttle control circuit a low. Check the fault conditions and vehicle-specific procedure before replacing parts.